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Service bulletin S-SB-0021-15

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10096724
Published by NHTSA2017-03-30
Manufacturer's numberS-SB-0021-15
Manufacturer's date2015-09-17
NHTSA componentENGINE

NHTSA's summary

SSB: SOME 2015 – 2016 MODEL YEAR FR-S VEHICLES MAY EXHIBIT A CONDITION WHERE THE ENGINE IDLE SPEED FLUCTUATES (TYPICALLY 500 – 1000 RPM) ONLY WHEN THE TRANSMISSION IS IN THE PARK OR NEUTRAL SHIFT POSITION. THIS CONDITION OCCURS AFTER THE VEHICLE HAS BEEN DRIVEN ABOUT 25 MILES OR MORE AT HIGHWAY SPEEDS. THE TRANSMISSION CONTROL MODULE (TCM) LOGIC HAS BEEN REVISED TO ADDRESS THIS CONDITION. USE THE FOLLOWING PROCEDURE FOR REPROGRAMMING THE TCM.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
SCION FR-S2015 to 2016

Listing a model year does not mean every vehicle of it is concerned: the document says which.